Advertisement
Grab your lab coat. Let's get started
Welcome!
Welcome!
Create an account below to get 6 C&EN articles per month, receive newsletters and more - all free.
It seems this is your first time logging in online. Please enter the following information to continue.
As an ACS member you automatically get access to this site. All we need is few more details to create your reading experience.
Not you? Sign in with a different account.
Not you? Sign in with a different account.
ERROR 1
ERROR 1
ERROR 2
ERROR 2
ERROR 2
ERROR 2
ERROR 2
Password and Confirm password must match.
If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)
ERROR 2
ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.
Materials
Chemistry In Pictures
Chemistry in Pictures: Spiraling out
by Alexandra A. Taylor
April 26, 2021
This micrograph, taken under crossed polarizers at 20× magnification, shows an array of complex colloids, each containing helical structures known as cholesteric liquid crystals. Alberto Concellón, a postdoc in Tim Swager’s group at the Massachusetts Institute of Technology, captured the image as part of his research. Concellón explains that incorporating chirality into a liquid crystal causes it to twist into a helix. Here, each liquid crystal’s radial helical structure originates from the center of the droplet, giving rise to concentric shells. These emulsions can be used as photonic materials, for example in chiral mirrors, biosensors, and some kinds of tunable lasers. The Swager lab is focusing on the emulsions’ biosensing abilities to detect foodborne pathogens such as Salmonella or Listeria.
Submitted by Alberto Concellón
Do science. Take pictures. Win money. Enter our photo contest here.
You might also like...
The power is now in your (nitrile gloved) hands
Sign up for a free account to get more articles. Or choose the ACS option that’s right for you.
Already have an ACS ID? Log in
Join the conversation
Contact the reporter
Submit a Letter to the Editor for publication
Engage with us on X